Protecting kinematographic films.



I. KITSEE. PROTEGTIN G KINEMATOGRAPHIG FILMS. APPLICATION :FILED 0012.28, 1909.

1,042,801. Patented Oct. 29, 1912.

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UNITED sTATEs PATENT onirica.I

ISIIDI KITSEE, OF PHILADELPHIA, PENN SYLVANI.

PROTECTING KINEMATOGRAPHIC FILMS.-

" or printed consist of a Celluloid, the product of a nitrated fiber intermixed With a camphor.

The frequent. occurrence of explosions of stored films is not due to a direct contactwof a spark with the film proper, but is due to an elevation of the temperature of the inclosed air, surcharged with the gaseous products of the composition from the film. These Jproducts generally carry a nitrous compound with them, and these gaseous products elevate the temperature of the inclosed air.

It is the aim of my inventionv to prevent such destructive explosions. i

I have found that if a nitrated material is embedded in a carbonate compound, the gases given off by said material are neutralized, the temperature remains stationary and no deterioration is ascertainable. Vi/'hen tivo films, each inclosed ina receptacle, are subjected to a higher temperature; one film embedded in a carbonate, the other film minus said carbonate, then the lilm Without the carbonate will inflame at a far lower temperature than the.film embedded in the carbonate, for the reason that the gaseous products of the'ilm embedded in ,the oarbonate are neutralized as soon as they are given off, whereas the gaseous products of I preferably provide for the film a 0011-"y tainer and place the carbonate in said contamer; and for an illustration ot one of the forms my invention may take, I have refer.

Specication of Letters Patent.

ence to the accompanying drawing, in Whichl Figure 1 is a side elevation partially in section of a container; a film inclosed therein; the container. lined `with a carbonate, suchfor instancel as bif-.earbonate of soda; and in which Fig. 2 "is a 4side elevation'partially in sectlon of a container in modified, form.

lIn F 1g. 1; l is the container; Qt-he cover l Patented oet. 29,1912., Application tiled October 28, 1909. Serial No. 525,057. i

for same; 3 al1-upright or support; #l the film placed on said support in a manner so as not to come in contact with the wallsof the container proper; 5 the lining impregnated with a carbonate. This lining may consist of any suitable material, but it is preferred that the same shall consist of an asbestos. The container and its cover may consistl of a metal, such as sheet iron.

In Fig. 2; l is thecontainer provided with the perforations 8 and the cover Q !Ihis cover is provided with means to place there- `on the film 4. rIhese means are here shown as the rod 9 provided with the screw threaded part 10 and the nut 1l. The car-A bonate 12 is placed on the bot-tom of the container. A

It is obvious that the form ofthe container may differ, but I have found that itis best to provide the container with means to hold the film away from the Walls or cover. It is also obvious that instead of being placed ina container,t the lfilm may simply be Wrapped in paper or textile fabric impregnated with a carbonate and I have only illust-rated the container, for the reason that I believe the same yto be more practical than a simpleA wrapping.

I am also aware thatvinstead of placing each lm in aseparate container provided with a carbonate, the closed space in which a series of films are deposited or stored, may be provided with this carbonate compound* preferably bi-carbonate of soda-at suitable places. ,v c.

The proximity of a bi-carbonate of ammoniumrhas also this advantage that ifa tire should break out in a place Where such' films are stored, the heat will release of the carbonate compound gases adapted to neul claiin as nevv anol desire to secure by Let'- ters Patent is:--

l. A container tor 'the storage of moving t picture and like films lined With an agent v 5 'orneutralizing gases given 0H by the hlm storecl therein. y

2. A. container tor the' storage of moving o picture and like hns having la lining. im-

pregnated with a neutralizing agent :tor the" i0 gases given 0H by the lm stored therein. f

3. A container for the storage of moving picture and like lms having a lining` iniregnated With a carbonate of ammonium tor neutralizing the gases given o@ by 'the 1'5 hn stored Within the container.

4. ln a container for. the storage of mov- I ing picture anal like lms, the combination with the bocly thereof provided with an agent tor neutralizing the gases given ont by y the lrn stored therein, rof a support associatecl with the container to maintain the ilm in proximity to said neutralizing agent, but tree vfrom contact therewith.,

5. ln a container for the storage ot moving picturel and like films, the combination With'ithe body thereof lnecl With an agent tor neutralizing the'gases given 0H by the lSlDUR Klt'lSEE.

Witnesses:

EDITH R. SHHMEY, f ALvAH Rrr'rnnnronsn. 

